Roborock S8 Pro Ultra vs SEBO AIRBELT K3 Premium Canister Vacuum

The Roborock S8 Pro Ultra combines robot vacuuming and mopping with a dock that automatically washes and hot-air dries the mop pad after each cleaning cycle, addressing the common complaint of dirty, smelly mop pads with other robot vacuum systems. A retractable mop lifts automatically when the robot detects carpet, preventing wet mopping cloths from soaking carpeted areas while vacuuming continues normally across all floor types. Reactive AI 2.0 obstacle avoidance combined with LiDAR navigation and multi-level mapping lets it clean multiple floors of a home intelligently, remembering furniture layout and no-go zones set through the companion app.

The AIRBELT K series is SEBO's mid-size canister range, built around quiet operation and a very large working radius. The K3 Premium is the top model, shipping with a parquet brush for hard floors and the ET-1 electric power head for carpet, where a driven brush roll is what actually agitates and lifts embedded dirt. Practical details matter more than headline numbers on a canister vacuum, and SEBO covers them: a 0.8-gallon bag, a 25-foot cord that gives a 37-foot cleaning radius, three onboard attachments, a telescopic tube with quick-release connections, rubber-coated wheels, a full-bag and clog indicator, a tug-and-retract cord rewinder, and a soft-foam bumper that protects furniture and walls. Two straight-suction siblings, the K2 Kombi and K2 Turbo, offer different cleaning heads at lower cost.

• Genuinely reduces manual mop maintenance
• Smart carpet detection for mop lifting
• Strong navigation and mapping accuracy
• Good obstacle avoidance

• Genuinely quiet, unusual for a vacuum with a driven power head
• Very long working radius from a single outlet
• Bagged filtration suits allergy households
• Built to last with protective bumper and wheels

• Premium price point
• Dock is large and needs dedicated space
• Mop washing uses additional water and detergent

• Bags are an ongoing consumable cost
• Canister format is less convenient than a cordless stick for quick jobs
• Pricing runs through dealers rather than being published